Antiskid device



April l, 1952 J. sAMPoGNA 2,591,300

ANTISKID DEVICE Filed Feb. 14. 1949 Joseph Sampagna IN1/mme.

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Patented Apr. 1, 1952 UNITED STATES PATENT OFFICE ANTISKID DEVICE `ioseph Sampogna, Yonkers, N. Y.

Application February 14, 1949, Serial No. 76,273

The present invention relates `to new and useful improvements in anti-skid devices for motor vehicles and more particularly to a novel traction cleat construction for vehicle tires.

An important object of the invention is to provide means for easily and quickly attaching the traction cleat to a vehicle tire for self-adjustment according to variations in the tire pressure.

Another object is to provide a traction cleat including longitudinally as well as transversely Figure 1 is a fragmentary side elevational view;

Figure 2 is a transverse sectional view taken on a line 2,-2 of Figure 1;

Figure 3 is a bottom plan view;

Figure 4 is a fragmentary plan view of the outer surface of the longitudinal cleat; and

Figure 5 is a similar view of the inner surface of the transverse cleat.

Referring now to the drawing in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of my invention, the numeral 5 designates an oval shaped longitudinal cleat of elongated form and made of stiff rubber, metal or other suitable material having its inner surface curved to conformably fit against the tread of a tire 6 and having its outer surface formed with transverse teeth or cleats 'I at its side portions and formed with radial teeth or cleats 8 at its curved end portions.

A transverse cleat 9 is positioned against the outer surface of cleat 5 and is also formed on its outer surface with teeth or cleats I arranged in parallel rows and which extend transversely of cleat 9 and longitudinally of the cleat 5.

The opposed surfaces of cleats and 9`are formed with interfitting rabbets or grooves Ii and I2 to lock the cleats from twisting or shifting movement one with respect to the other and rivets I2a hold the cleats in assembled relation.

'I'he outer ends of transverse cleat 9 are curved rearwardly and provided with transverse pins I3 on which a pair of rods I4 are pivoted by eyes I5. The rods being positioned at opposite sides of the tire and slidably positioned in the ends of a bar I6 positioned transversely of a tire rim l1, the

bar being formed with an offset or drop center I8 to provide a seat for the drp center of the l'lm.

Coil springs I9 are placed on the inner ends of rods I4 and are held under tension against the bar I5 by thumb nuts 20.

1n the operation of the device the bar I 6 is inserted through an opening 2| in a vehicle wheel into a position transversely of the rim Il and the cleats 5 and 9 placed against the tread of the tire and held in position by the rods I4 connecting the ends of cleat 9 to the ends of bar I6.

The coil springs I0 hold the cleats firmly against the tire and yield to variations in the pressure in the tire.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary. Y 4

It is to be understood, however, that even though there is hereinshown and described Va preferred embodiment of the invention the same is susceptible to certain changes fuly comprehended by the spirit ofthe invention as herein described and the scope of the appended claim.

Having described the invention, what is claimed as new is:

A traction device for a vehicle wheel comprising a transverse cleat, a vlongitudinal cleat of elongated endless band4 form having parallel sides and rounded ends and attached to lsaid transverse cleat and extending longitudinally beyond the sides thereof, and means for attaching one of said cleats to said wheel, said longitudinal cleat having transversetread teeth spaced along its sides and radial teeth spaced around its ends.

.iosEPH sAMPoGNA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,079,273 Standish L; NOV. 18, 1913 1,147,549 ltikmar July 20, 1915 1,476,606 Hall --.Q Dec. 4, 1923 2,066,412 Meckler- Jan. 5, 1937 2,231,113 Dozier Feb. 11, 1941 2,464,564 Dunner Mar. 15, 1949 FOREIGN PATENTS Number Country i Date 830,563 France 's Aug. 3, 1938 

